Bag filling and weighing device



Patented Feb. 20, 1940 UNITED STATES PATENT OFFICE BAG FILLING AND WEIGHING DEVICE York Original application August 5, 1937, Serial No.

157,480. Divided and this application December 23, 1937, Serial No. 181,327

8 Claims.

.This invention relates to bag filling and weighing apparatus, and is an improvement over the bag-holding means embodied in U. S. Patent No. 1,823,283.

This application is a division of our prior ap plication Serial No. 157,480 filed August 5, 1937, which has matured into Patent No. 2,159,858.

It is one of the objects of our invention to provide a simple, reliable, and yet quick acting means for firmly holding a flexible container wall at the open end thereof in an expanded condition for the feeding of the material into the container, and also to provide means for vibrating the container or shaking the same and 15 its contents for the purpose of compacting the material during the filling operation subsequent to removal from the filling means.

It is another object of the invention to provide an improved weighing device or mechanism in combination with a shaking device so related one to the other that the weighing mechanism is suspended when the shaking device is coupled for use; and wherein the shaking device is dis connected to enable the weighing functions to be performed.

A further object of the invention is to protect the delicate knife edge on which the beam swings in the weighing operation and to provide for the removal of such knife edge from its bearing during the shaking operation.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

Similar characters of reference refer to similar parts throughout the several views.

In the accompanying drawing:

Figure l is a detail side elevation partly cut away, and showing one embodiment of the invention.

Figure 2 is a horizontal section taken on the line 2-2 of Fig. 1.

In Figs. 1 and 2, a substantially horizontal frame 82 is fulcrumed at its opposite side members 83 and 84 by the bar 85 having the ends thereof V shaped to form a knife edge support for said frame 82 upon the rings 86 which are supported by the rods 8'! from ceiling beams or other suitable stationary superposed structure. Blocks 88 of the frame 82 having V shaped recesses therein, are rigidly fastened in transverse alignment, one to each of the side frame members 83 and 84 and. are adapted to support, the bag holding and expanding means, by the knife edges 89 carried by the auxiliary frame 90. The

auxiliary frame 99 is composed of two short longitudinally disposed side members 9I to which one-half designated by references character 92, is rigidly fastened and upon which the other half designated 93 of the hollow sleeve is adapted to 1 slide in a longitudinal direction. The bag holding members 92 and 93 have the bosses 94 appended thereto, to which the levers 95 and the levers 96 are pivotally secured, the levers 95 having the clevices 9'! which are pivotally connected to the levers 96. The levers 96 are connected by the rod 98 at their outer extremities, said rod 98 being adapted to be raised and lowered. by the operator to thereby move the half 93 of the sleeve towards or away from the other half of the sleeve 92. The levers 95 are composed of hollow sections 99 into which the parts carrying the clevices 91 are adapted to slide, compression springs clevis parts 91 out of said hollow parts 99, said clevis parts 91 being limited in their motion relative to the hollow parts 99 by the pins IIJI operating in slots I02. frame 90, the side members 9| thereof are spaced apart by the rod I113, which is adapted to be raised and hooked to the shaking means. This shaking means comprises the hook I04, the

chain I05, the eccentric cam I06 and the motor slots III at the lower ends of the vertical rods I I2, said rods I I2 being fastened to ceiling beams or other suitable stationary structure. The slots III thereby limit the motion of the frame 82 about its fulcrum 85. The frame 32 has at the opposite end from the bag supporting mechanism, a transverse cross member H3 with the knife edge section I I4 supporting the weights I I5 which may be varied at will, and in addition the side member 83, has the graduated bar II6 fastened thereto, with the weight II'l slidably mounted thereon. A suitable dial H8 is supported from ceiling beams by the members H9 and has the pointer I20 pivoted thereto and linked to the frame 82 by the member I2I which rests in the V block I22 fastened to the side member 83 of said frame 82.

I00 being carried in said hollow parts 99'which tend to yieldably urge the At one end of the auxiliary The material to be filled into the bag or container B is fed in through the hopper II], the container B being held upon the outwardly flaring lower portions I24 of the sleeve sections 92 and 93.

In the use of the embodiments shown in Figs. 1 and 2, the mouth of the bag B is disposed about the lower part of the holders 92 and 93 in their initially contracted condition, and the handle 98 is lowered to move the holder 93 away from the holder 92 thus placing the mouth of the bag under tension, the beading I24 frictionally engaging'the material of the bag B, and supporting it upon said holders 92 and 93 in a position to be filled. Material is now fed into the bag B from the hopper structure iii disposed above, it being advantageous to first feed the greater portion into the bag rapidly and then add additional material in small amounts until the scale is balanced as indicated by the pointer I28 on the dial M8, the weights H5 and the weight III having been adjusted to the predetermined setting desired. The operator now raises the bar I03 of the auxiliary frame 9t and hooks it to the chain I95 of the shaker motor I91. The first effect of raising the bar IE3 is to tilt the auxiliary frame 9ll until the base of the notches I38 are brought to bear upon the cross member Hi9 of the frame 82.

Upon further movement of the bar I413, the knife edges of the auxiliary frame are raised off the V blocks 83 of the main frame 82, and the side members ti of the auxiliary frame 96 are brought to bear against the cross member I23 at the left 'end of the main frame 82. Since the chain I05 is of such a length that still further movement is required before the bar I I13 may be hooked thereon, the main frame 82 is tilted until the bar I I is brought to bear upon the base of the slots III, the frame 82 now being supported by the rods H2, the knife edges of the bar 85 being lifted clear of the rings 85, thus permitting the frame 82 to be oscillated by the shaker motor IUIwithout injury to the knife edges 85 and 89, or their supports 36 and 88 'When the bag has been shaken for a sufficient length of time the motor I0! is stopped, the handle as is raised and the holder 93 is moved towards the holder 92, thereby the bag B is released.

It is obvious that various changes and modifi cations be made in the details of construction and the method of use of the above described embodiment of our invention without departing from the spirit thereof, such-changes and modifications being restricted only by the scope of the following claims:

We claim:

1. A bag filling machine comprising a frame having a bar, a filling; means carried by said frame, knife edge means engageable with said frame f r supporting said frame for vertical swinging movement, a weight determining means carried by said frame, a second normally disengaged supporting means engageable with said frame, and shaking means including a hook and an eccentilcally mounted chain engag'eable with said bar upon vertical movement of said frame and bar sufficient to disengage said frame from said knife edge means and to move said frame into engagement with said second supporting means.

A bag filling machine comprising a frame having a bar, a filling means carried by said frame, knife edge means engageable with said frame for supporting said frame for vertical swinging movement, a weight determining means carried by said frame, a second normally disengaged supporting means engageable with said frame, and shaking means including a hook and an eccentrically mounted chain engageable with said bar upon vertical movement of said frame and bar sufficient to disengage said frame from said knife edge means and to move said frame into engagement with said second supporting means, said chain being of such a length and so positioned as to maintain said frame out of engagement with said knife edge means during the entire shaking operation.

' 3. A bag filling machine comprising a main frame having V-shaped recess and a member, an auxiliary frame having a knife edge normally received by the V-shaped recess on the main frame and a notch normally out of engagement With the member on the main frame and in ver-: tical alinement therewith, bag holding means on said auxiliary frame, a detent on the main frame disposed in the path of movement of the auxiliary frame on its knife edge, knife edge means engageable with said main frame for supporting it for vertical swinging movement, a second normally disengaged supporting means engageable with said main frame, and shaking means so positioned with respect to the auxiliary frame that initial movement of the auxiliary frame towards the shaking means causes the auxiliary frame to engage the detent and the member to be received by the notch and at the same time disengaging the knife edge of the auxiliary'frame from its recess and further movement of the auxiliary frame towards the shaking means causes movement of the main frame so that the knife edge means is disengaged and the main frame is moved into engagement with said second supporting means.

i. A device of the character described comprising a scale beam, a knife-edge fulcrum for said beam, a container holding device carried by the beam at one side of the knife-edge fulcrum, a second shaker fulcrum for the beam spaced from the knife-edge fulcrum and being offset vertically with respect to the knife-edge fulcrum whereby when one fulcrum is engaged the other fulcrum is disengaged, and shaking mechanism detachably connectible with said beam and positioned relatively thereto to be engaged with the beam only when the beam is raised oifthe knifeedge fulcrum and engaged with said shaker fulcrum. I

5. A device of the character described com prising a scale beam, a scale fulcrum for'said beam, a bearing for said scale fulcrum of a size with respect to said fulcrum to allow of the fulcrum to be disengaged from said bearing, a shaker fulcrum for said beam spaced from the scale fulcrum, a bearing for the shaker fulcrum offset vertically relative to the scale fulcrum bearing whereby the beam may be tilted relatively to engage one or the other fulcrum, said second bearing being of a size to permit free vertical play of the shaker fulcrum, a container support on said beam, and a shaker mechanism adapted to be connected with said beam and positioned relatively thereto to engage the beam only when the scale fulcrum is disengaged from its bearing and the shaker fulcrumengaged with its bearing.

A device of the character described comprising a scale beam, a disconnectible scale fulcrum for said beam, a disconnectible index device for scale fulcrum and also being disconnectible, one fulcrum being offset relatively in a vertical direction with respect to the other fulcrum whereby one fulcrum alone may be engaged, a container holding device for said beam, and a shaker mechanism detachably connected with said beam and positioned relatively thereto to be connected to the beam only when the beam is tilted to engage the shaker fulcrum and disconnect said scale fulcrum and said index.

'7. A device of the character described comprising a scale beam, a knife-edge scale fulcrum for said beam, a shaker fulcrum also for said beam, loose bearing supports for said fulcrums being offset relatively in a vertical sense to permit the beam to be rocked from one fulcrum onto the other fulcrum and to have a limited oscillating movement on either fulcrum without interference from the other fulcrum, an adjustable weight carrying device on the beam at one side of said fulcrums, a container holding device on the beam at the other side of said fulcrums, and a shaker mechanism positioned to be detachably connected with the beam adjacent the container holding device and placed relatively to the beam to be connected therewith only when the scale fulcrum is raised from its bearing and the shaker fulcrum lowered into engagement with its particular bearing.

8. A device of the character described comprising a scale beam, a scale fulcrum on which said beam may rock, a shaking fulcrum on which said beam may rock, bearing supports for said fulcrums offset relatively in a vertical sense whereby one fulcrum may be engaged when the other is disengaged, a supplemental frame carried by said beam at one side of said fulcrums, a detachable fulcrum for supporting said supplemental frame from said beam, detent means for holding said supplemental frame substantially rigid when its fulcrum is disconnected, container holding means on said supplemental frame, and a shaker mechanism adapted to be detachably connected with said supplemental frame and placed relatively thereto to be connected only when the supplemental frame is moved against said detent means and when the beam is tilted to cause the shaker fulcrum to be engaged.

JACOB J. NEUMAN. HARRY G. NEUMAN. 

